| 北斗三号B1C/B2a新信号精密定轨性能分析北大核心CSCD |
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| 引用本文： | 赖 文,黄观文,解世超,岳 帆,秦志伟,折浩男.北斗三号B1C/B2a新信号精密定轨性能分析北大核心CSCD[J].大地测量与地球动力学,2023,43(2):158-163. |
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| 作者姓名： | 赖 文 黄观文 解世超 岳 帆 秦志伟 折浩男 |
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| 作者单位： | 1.长安大学地质工程与测绘学院710054; |
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| 基金项目： | 陕西省杰出青年科学基金(2019JC-20)；陕西省重点研发计划(2022ZDLSF07-12)。 |
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| 摘 要： | 为分析评估BDS-3新信号(B1C和B2a)的定轨服务水平,收集2021-05-01~06-30全球均匀分布的69个MGEX测站观测数据对B1C和B2a信号精密定轨性能进行评估。48 h重叠弧段结果表明,使用B1C/B2a组合观测值时,BDS-3 MEO卫星轨道3D RMS值优于6 cm,径向优于2 cm,激光测距检核残差优于4 cm。此外,单BDS-3 MEO及BDS-3 MEO+Galileo两种情况下新老信号精密定轨结果表明,前者新老信号定轨精度相差不超过1 mm,定轨性能基本相当;后者B1C/B2a新信号相比于B1I/B3I老信号呈现出更优的定轨性能,其3D RMS提升0.38 cm。
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| 关 键 词： | BDS-3 B1C/B2a新信号 精密定轨 联合精密定轨 激光测距 |
Performance Analysis of Precise Orbit Determinationfor BDS-3 B1C/B2a New Signal |
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| LAI Wen,HUANG Guanwen,XIE Shichao,YUE Fan,QIN Zhiwei,SHE Haonan.Performance Analysis of Precise Orbit Determinationfor BDS-3 B1C/B2a New Signal[J].Journal of Geodesy and Geodynamics,2023,43(2):158-163. |
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| Authors: | LAI Wen HUANG Guanwen XIE Shichao YUE Fan QIN Zhiwei SHE Haonan |
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| Abstract: | To analyze and evaluate the orbit determination performance of the new BDS-3 signals (B1C and B2a), we collect the observation data of 69 MGEX stations that are evenly distributed around the world from May 1 to June 30, 2021 to evaluate the precise orbit determination performance of B1C and B2a signals. The results of the 48 h overlapping arc show that the 3D RMS value of the BDS-3 MEO satellite orbit based on B1C/B2a combined observations is better than 6 cm, the radial value is better than 2 cm, and the laser ranging check residual is better than 4 cm. In addition,under the conditions of single BDS-3 MEO and BDS-3 MEO+Galileo, the orbit determination performance of new and old signals of the former are basically the same, and the difference of orbit determination accuracy is not more than 1 mm; for the latter, B1C/B2a new signal shows better orbit determination performance than B1I/B3I old signal, with its 3D RMS increased by 0.38 cm. |
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| Keywords: | BDS-3 B1C/B2a new signal precise orbit determination combined precise orbit determination laser ranging |
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